Historically, the time spent by dcsi3710 students on trying to certify any hls homework is known to have a mean of 29 minutes. in order to examine the claim that homework 9.4 was actually less time consuming, an instructor asked 10 students how much time they spent on it. their times had a mean of 23 minutes and a sample standard deviation of 11 minutes. conduct the appropriate hypothesis test, at the 5% significance level.

Select all the correct statements. the amount in dollars an electrician charges in terms of the number of hours worked is represented by the function y = 22x + 42. from the function, identify all the phrases that hold true for the situation. the electrician charges an initial fee of $22 the y-variable represents the number of hours the electrician charges an initial fee of $42 the electrician charges $22 for every hour worked the x-variable represents the electricians charges in dollars the electrician charges $42 for every hour worked

Consider the sequence below. 3 , 1 , 1/3 , 1/9 , select the explicit function which defines the sequence.

Simplify 1/3 12x - 6 a. -2x-1 b.-2x-8 c.-x+4 d.3x+10 e. 4x-2